Sound of marbles under acceleration? - Defender Source
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  #1  
Old January 12th, 2018, 07:00 PM
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Sound of marbles under acceleration?

Hey y’all,

Just curious is this is a normal sound or not on my 2.5 na. Whenever I step on the gas pedal with any force it sounds like Marbles rolling. It’s the weirdest thing. It doesn’t happen under light acceleration.

Any ideas what it might be?

Cheers,

J


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  #2  
Old January 12th, 2018, 07:08 PM
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Not familiar with that sound. If new to you, have you replaced all fluids, timed the IP, and adjusted tappets?

If only under load sounds like a fueling issue. Red90 will know, most likely.
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  #3  
Old January 12th, 2018, 07:33 PM
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No idea. Maybe try and make a video. Maybe a u-joint if it changes with throttle load?

There is a light and hard acceleration with a 2.5?
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  #4  
Old January 12th, 2018, 07:40 PM
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I had to look up a video to hear what "rolling marbles" sound like. I still can't tell.. maybe top end noise, exhaust leak?
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Old January 12th, 2018, 07:51 PM
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I’ll take a vid as soon as I can. Thanks y’all. All Fluids have been replaced recently, though noise persisted afterwards.


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------ Follow up post added January 12th, 2018 06:52 PM ------

@red90 there’s: “pushed by a light breeze” and then there’s: “pushed by an asthmatic mouse”. The difference is marked


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  #6  
Old January 12th, 2018, 11:22 PM
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I'm gonna go ahead and say it, that's the sound of a 2.5 n/a crying to be put out of its misery. Just do it, it needs to be done.
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  #7  
Old January 12th, 2018, 11:34 PM
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Quote:
Originally Posted by Daddymow View Post
I'm gonna go ahead and say it, that's the sound of a 2.5 n/a crying to be put out of its misery. Just do it, it needs to be done.


Lol! Saving up for that 2.8 repower


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  #8  
Old January 12th, 2018, 11:56 PM
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Quote:
Originally Posted by Daddymow View Post
I'm gonna go ahead and say it, that's the sound of a 2.5 n/a crying to be put out of its misery. Just do it, it needs to be done.
and the band played on....

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  #9  
Old January 13th, 2018, 05:46 AM
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leftover acorn shells from the squirrels that power that thing...
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  #10  
Old January 13th, 2018, 10:30 AM
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Had a weird issue with my 200tdi years ago. Sounded like someone throwing a handful of gravel or marbles under the truck against something metal. Mine only seemed to happen when I would stop more abruptly than normal. Turned out during past clutch work, the previous owner left pieces of broken brass throw-out fork pieces(if you know what I mean) in the bell housing.

Mike
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  #11  
Old January 13th, 2018, 10:34 AM
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Have you had this Landy long?
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  #12  
Old January 13th, 2018, 11:32 AM
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first move would be to narrow down where its coming from.

1.does this happen only while moving?
2.in all gears?
3.in neutral?
4.if clutch pedal is up?
5.if clutch pedal is down?
6.in diff lock?

if it happens while stationary as well, put the transfer box in neutral and repeat 2 through 5

If it is internal to the engine, it may not occur while stationary since the engine isn't working as hard.

if it's isolated to one gear then its probably the gearbox

is the exhaust system properly secured to the vehicle?

all lugnuts tight?

handbrake drum tight?

if it goes away with the clutch pedal down, it might be the throwout bearing.

if it goes away in diff lock it could be a driveshaft thing although I find I usually hear those at low speeds first and not on the highway.

to check driveshaft u-joints, chock the wheels and put the car in neutral with the handbrake off.
grab each driveshaft on either side of each u joint and see there's any rotational movement between the two bits. do the same for the splined joint in the middle of the shaft. any perceptible movement indicates a joint needing replaced. you can get away with some slop in the sliding spline but not much.

if its only while moving, try flooring it (just long enough to hear it, don't blow up your engine haha) going up a steep hill, that should increase the loading and exacerbate the issue if its internal to the engine.

anyway...good luck with it. let us know.
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  #13  
Old January 13th, 2018, 11:48 AM
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When u r in the wrong gear...ie 5th and stomp a laboring or underpowered engine it can make a noise like that
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  #14  
Old January 13th, 2018, 04:52 PM
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Woah thanks guys! I’ll get on the list that @ren Ching suggested and come back with answers.


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  #15  
Old January 13th, 2018, 07:07 PM
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Dave, I'll go ahead and answer for Jesus.

1. Yes, it's a 2.5 n/a it makes hideous rattling noises when it's moving.
2. Yes, the more gears you use the more death rattles it makes.
3. Of course it moans, groans and rattles - it's internal parts are moving therefore it makes death noises.
4. You betcha.
5. Hell yea.
6. Why wouldn't it? It's a 2.5 n/a.

Having to repeat steps 2-6 is too painful.
I can't tell if it's internal to the engine because ABSOLUTELY EVERYTHING IS RATTLING- EVERYTHING!!!
Every gear, no gears, all gears, some gears, random gears whatever.
Of course the exhaust system is not properly secured it rattled lose shortly after it left the factory because its attached to a 2.5 n/a.
The 2.5 n/a constantly rattles the lug nuts lose along with my fillings and bowels.
See answer above.
Because I have ADD/dyslexicia I'll just put the rest of your queries in the "if a tree falls in the woods does it make a sound?" category. No because some ding-a-ling with a Defender with a 2.5 n/a was rattling, belching smoking and making so much damn noise while it's running in the woods even the bear couldn't concentrate and had to go find somewhere else to take a shit much less hearing a damn tree fall somewhere.

Any other 2.5 n/a rattling questions I can help you with?
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Old January 13th, 2018, 07:29 PM
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Quote:
Originally Posted by Daddymow View Post
Dave, I'll go ahead and answer for Jesus.



1. Yes, it's a 2.5 n/a it makes hideous rattling noises when it's moving.

2. Yes, the more gears you use the more death rattles it makes.

3. Of course it moans, groans and rattles - it's internal parts are moving therefore it makes death noises.

4. You betcha.

5. Hell yea.

6. Why wouldn't it? It's a 2.5 n/a.



Having to repeat steps 2-6 is too painful.

I can't tell if it's internal to the engine because ABSOLUTELY EVERYTHING IS RATTLING- EVERYTHING!!!

Every gear, no gears, all gears, some gears, random gears whatever.

Of course the exhaust system is not properly secured it rattled lose shortly after it left the factory because its attached to a 2.5 n/a.

The 2.5 n/a constantly rattles the lug nuts lose along with my fillings and bowels.

See answer above.

Because I have ADD/dyslexicia I'll just put the rest of your queries in the "if a tree falls in the woods does it make a sound?" category. No because some ding-a-ling with a Defender with a 2.5 n/a was rattling, belching smoking and making so much damn noise while it's running in the woods even the bear couldn't concentrate and had to go find somewhere else to take a shit much less hearing a damn tree fall somewhere.



Any other 2.5 n/a rattling questions I can help you with?



I tried to read this, but couldn’t concentrate over the Rattling of the 2.5na. I assume it holds the answer to my problem as well as the answer to life, the universe, and everything.


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  #17  
Old January 14th, 2018, 09:29 AM
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Haha! If you have any other questions about the venerable 2.5 n/a just let me know.
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  #18  
Old January 14th, 2018, 09:39 AM
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To my ears the 200tdi and earlier engines sound like a box of lug nuts being shaken in a tin can..
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  #19  
Old January 14th, 2018, 09:45 AM
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Only if you have something wrong.
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Old January 14th, 2018, 10:30 AM
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Jesus, have you owned a diesel before? There’s a reason it’s called dieseling when you turn a gas engine off and it continues to run bucking, knocking, and wheezing. They are noisy. When you accelerate, it sounds like a baritone opera singer going arg, arg, arg, Arg, ARg, ARG!

Sometimes the vibration causes a loose heat shield to vibrate sounding like rocks in a can, sometimes a loose or broken motor mount causes the exhaust to bang against the frame, sometimes every noise in a newly purchased LR causes a freak out moment.
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